The study will occur in three phases. In a 12-month preparation phase, we will refine and complete intervention and measurement protocols, recruit subjects and randomly assign girls and mothers to study arms, and pretest girls and mothers. A 12-month implementation phase will initiate field operations of the clinical trial, including intervention delivery, process data collection, and posttests. Follow-up in the last 36 months will involve longitudinal measurements of girls and mothers, booster session development and delivery, and data analyses.